GB156411A - Improvements in or relating to enclosed-bulb electric devices - Google Patents

Improvements in or relating to enclosed-bulb electric devices

Info

Publication number
GB156411A
GB156411A GB5220A GB5220A GB156411A GB 156411 A GB156411 A GB 156411A GB 5220 A GB5220 A GB 5220A GB 5220 A GB5220 A GB 5220A GB 156411 A GB156411 A GB 156411A
Authority
GB
United Kingdom
Prior art keywords
enclosed
relating
loop
electric devices
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5220A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB5220A priority Critical patent/GB156411A/en
Publication of GB156411A publication Critical patent/GB156411A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/18—Supports; Vibration-damping arrangements

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

156,411. General Electric Co., Ltd., and Durdle, O. Jan. 2, 1920. Vacuum tubes.-The support d for the loop a of a cathode filament is made of steatite. A wire g passing through the support is formed at one end as a hook f engaging with the loop, and at the other end has a head j against which a washer k is pressed by a light helical spring m. The support fits in a ring c mounted on a frame b carrying the grid. In a modification the spring m is omitted, and the loop is connected through a spring with the hook. It is stated that steatite does not occlude gas.
GB5220A 1920-01-02 1920-01-02 Improvements in or relating to enclosed-bulb electric devices Expired GB156411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5220A GB156411A (en) 1920-01-02 1920-01-02 Improvements in or relating to enclosed-bulb electric devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5220A GB156411A (en) 1920-01-02 1920-01-02 Improvements in or relating to enclosed-bulb electric devices

Publications (1)

Publication Number Publication Date
GB156411A true GB156411A (en) 1921-01-13

Family

ID=9697538

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5220A Expired GB156411A (en) 1920-01-02 1920-01-02 Improvements in or relating to enclosed-bulb electric devices

Country Status (1)

Country Link
GB (1) GB156411A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9334643B2 (en) 2011-07-04 2016-05-10 Betconframe International Pty Ltd Three dimensional upwardly convex frame and a method of constructing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9334643B2 (en) 2011-07-04 2016-05-10 Betconframe International Pty Ltd Three dimensional upwardly convex frame and a method of constructing same

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